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Using a micro-UAV for ultra-high resolution multi-sensor observations of Antarctic moss beds
conference contribution
posted on 2023-05-23, 17:49 authored by Arko LucieerArko Lucieer, Robinson, S, Darren TurnerDarren Turner, Harwin, S, Kelcey, JThis study is the first to use an Unmanned Aerial Vehicle (UAV) for mapping moss beds in Antarctica. Mosses can be used as indicators for the regional effects of climate change. Mapping and monitoring their extent and health is therefore important. UAV aerial photography provides ultra-high resolution spatial data for this purpose. We developed a technique to extract an extremely dense 3D point cloud from overlapping UAV aerial photography based on structure from motion (SfM) algorithms. The combination of SfM and patch-based multi-view stereo image vision algorithms resulted in a 2 cm resolution digital terrain model (DTM). This detailed topographic information combined with vegetation indices derived from a 6-band multispectral sensor enabled the assessment of moss bed health. This novel UAV system has allowed us to map different environmental characteristics of the moss beds at ultra-high resolution providing us with a better understanding of these fragile Antarctic ecosystems. The paper provides details on the different UAV instruments and the image processing framework resulting in DEMs, vegetation indices, and terrain derivatives.
Funding
Australian Research Council
History
Publication title
International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume 39-B1Volume
39-B1Editors
M Shortis, W Wagner, J HyyppaPagination
429-433Department/School
School of Geography, Planning and Spatial SciencesPublisher
ISPRSPlace of publication
AustraliaEvent title
The 12th Congress of the International Society for Photogrammetry and Remote SensingEvent Venue
Melbourne, AustraliaDate of Event (Start Date)
2012-08-25Date of Event (End Date)
2012-09-01Repository Status
- Restricted